Chorizanthe membranacea

Bentham

Trans. Linn. Soc. London 17: 419, plate 17, fig. 11. 1836.

Common names: Pink spineflower
IllustratedEndemic
Synonyms: Eriogonella membranacea (Bentham) Goodman
Treatment appears in FNA Volume 5. Treatment on page 450. Mentioned on page 447, 449.
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Plants 1–6 (–10) × 0.5–3 (–5) dm, woolly-floccose. Leaves basal and cauline; petiole 0.1–0.5 (–0.8) cm; blade linear to narrowly oblanceolate, (1–) 1.5–5 × 0.1–0.3 cm, thinly to densely floccose adaxially, densely tomentose abaxially. Inflorescences strict, white to greenish, open; bracts usually 2, opposite, rarely in whorls of 3–5, short-petiolate, acerose, similar to proximal leaf-blades only reduced, 0.3–3 cm × 1–3 mm, awns straight, 0.5–1 mm. Involucres usually congested in small terminal clusters of 1–3 at node of dichotomies, urceolate, ventricose basally, 3-angled, 6-ribbed, 3–4 mm, not corrugate, with conspicuous, white margins extending across sinuses, tomentose to floccose or glabrate with age, greenish to brownish; teeth 6; awns uncinate, 0.7–1.5 mm. Flowers 1 (–2), slightly exserted; perianth white to rose, subcylindric, (1.5–) 2.5–3 mm, densely pubescent abaxially; tepals connate 2/3 their length, slightly dimorphic, entire and rounded apically, those of outer whorl obovate, those of inner whorl spatulate; stamens slightly exserted; filaments 1.5–2.5 mm, glabrous; anthers pink to red, oval, 0.2–0.3 mm. Achenes 2.5–3 mm. 2n = 38, 40, (42), 80, 82, 84.


Phenology: Flowering Apr–Jul.
Habitat: Sandy to gravelly or rocky flats and slopes, mixed grassland and chaparral communities, oak-pine woodlands
Elevation: 40-1400(-1600) m

Discussion

Chorizanthe membranacea has long been considered an isolated element among the spineflowers. The strict, upright habit, numerous basal and cauline leaves, and broad, continuous, membranous margins of the involucre all reflect that isolation. Pink spineflower is widespread and often locally common in the Coast Ranges of southwestern Oregon and California and on the western foothills of the Sierra Nevada southward to the Transverse Ranges and the Tehachapi Mountains of Ventura and Kern counties, California.

Selected References

None.

Lower Taxa

None.

"connate" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."/3" is not declared as a valid unit of measurement for this property.

... more about "Chorizanthe membranacea"
84 +, 82 +, 80 +, 40 +  and 38 +
3-gonous +
pink +  and red +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
James L. Reveal +
Bentham +
straight +
uncinate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
alternate +  and rosulate +
stipelike +
Undefined subg. Eriogonella +
awn-tipped +  and simple +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
tomentose +  and floccose +
linear;narrowly oblanceolate +
0.1cm;0.3cm +
short-petiolate +
0.3 cm3 mm <br />0.003 m <br /> (3 cm30 mm <br />0.03 m <br />) +
glandular +, woolly-floccose +, tomentose +, strigose +, villous +, hirsute +  and pubescent +
acerose +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
disarticulating +, dichotomous +, branched +  and open +
erect +  and spreading +
just below the soil surface or and above the soil surface +  and spreading +
Pink spineflower +
Calif. +  and Oreg. +
40-1400(-1600) m +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy to gravelly or rocky flats and slopes, mixed grassland and chaparral communities, oak-pine woodlands +
cymelike +, paniclelike +, racemelike +  and spikelike +
connate +  and free +
greenish +  and brownish +
tomentose +  and floccose or glabrate +
3-angled +, ventricose +  and urceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
deciduous +  and persistent +
cauline +  and basal +
bractlike +
conspicuous +
pubescent +  and glabrous +
lobed +, undulate +, crisped +, crenulate +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
subcylindric +
accrescent +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Apr–Jul. +
homostylous +  and 3-carpellate +
Trans. Linn. Soc. London +
, +  and solid +
slender;stout +
Illustrated +  and Endemic +
not disarticulating +
decumbent to erect +  and prostrate +
prostrate +  and erect +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
? (?) +  and ? (?) +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading +
Eriogonella membranacea +
chambered +, , +  and solid +
Slender (?) +  and Stout (?) +
Chorizanthe membranacea +
Chorizanthe subg. Eriogonella +
species +
lobed +  and laciniate +
coriaceous +
shallow +
persistent +
membranous +
pubescent +  and glabrous +
3 +, 2 +  and 1 +